Merge "Zygote: Add Arm pointer authentication keychange support." am: 285dfb3126 am: 9b63f4e904 am: 54cb1fcefb

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1215821

Change-Id: I31122b33e74c08efbf4e50dfd693f0ca1359a59b